Study of Magnetized accretion flow with cooling processes

TL;DR

This paper investigates shock formation in magnetized accretion flows onto neutron stars, emphasizing the importance of cyclotron cooling for realistic solutions that satisfy boundary conditions.

Contribution

It introduces the role of cyclotron cooling in magnetized accretion flows and identifies conditions for shock formation near neutron star surfaces.

Findings

Shock solutions terminate near the neutron star surface.

A second shock can form away from the star surface.

Cyclotron cooling is essential for accurate accretion modeling.

Abstract

We have studied shock in magnetized accretion flow/funnel flow in case of neutron star with bremsstrahlung cooling and cyclotron cooling. All accretion solutions terminate with a shock close to the neutron star surface, but at some region of the parameter space, it also harbours a second shock away from the star surface. We have found that cyclotron cooling is necessary for correct accretion solutions which match the surface boundary conditions.